Daz3d to blender? Model has white eyes!
I imported a Genesis2 model from DAZ studio to Blender (2.7) using .dae format, and encountered this too. 
Some parts of the eye need to be textured (e.g. iris, pupils and sclera) as you would expect, but the cornea (The outer jelly-like part) must obviously be transparent just like a real eye. The material it has by default makes it white which is what you encountered.

So - select the eye objects (LEye and REye) in the Object tree (usually top right of the screen)
In the materials properties for that object you should see a list of pre-assigned materials.
For both 'Cornea' and 'Eye Reflection' assign a new Glass material since they must be transparent so you can see the rest of the eye. 
For that glass material I would change the IOR to about 1.1 so that it's really transparent.
Not sure if this is the right approach but it worked for me :)